A spacious airport terminal with a high ceiling and natural light.

£110 Cheap Flights from Boston (BOS) to San Francisco (SFO)

View £110 flight on Fri, 6 Nov 2026Opens in a new window

Flight 1

Popular airlines from Logan International Airport (BOS) to San Francisco International Airport (SFO)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 25% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Boston (BOS) to San Francisco (SFO)

Prices were available within the past 7 days and start at £110 for one-way flights and £217 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Thu, 21 Jan - Wed, 27 Jan
BOS
Boston
SFO
San Francisco
£217 Return, found 3 days ago
£217
Return
found 3 days ago
Select JetBlue Airways flight, departing Thu, 21 Jan from Boston to San Francisco, returning Wed, 27 Jan, priced at £217 found 3 days ago
JetBlue Airways
Fri, 6 Nov - Mon, 9 Nov
BOS
Boston
SFO
San Francisco
£219 Return, found 3 hours ago
£219
Return
found 3 hours ago
Select JetBlue Airways flight, departing Fri, 6 Nov from Boston to San Francisco, returning Mon, 9 Nov, priced at £219 found 3 hours ago
Alaska Airlines
Sat, 12 Sept - Mon, 14 Sept
BOS
Boston
SFO
San Francisco
£220 Return, found 2 days ago
£220
Return
found 2 days ago
Select Alaska Airlines flight, departing Sat, 12 Sept from Boston to San Francisco, returning Mon, 14 Sept, priced at £220 found 2 days ago
JetBlue Airways
Fri, 28 Aug - Mon, 14 Sept
BOS
Boston
SFO
San Francisco
£221 Return, found 3 days ago
£221
Return
found 3 days ago
Select JetBlue Airways flight, departing Fri, 28 Aug from Boston to San Francisco, returning Mon, 14 Sept, priced at £221 found 3 days ago
Alaska Airlines
Sat, 12 Sept - Sat, 3 Oct
BOS
Boston
SFO
San Francisco
£222 Return, found 2 days ago
£222
Return
found 2 days ago
Select Alaska Airlines flight, departing Sat, 12 Sept from Boston to San Francisco, returning Sat, 3 Oct, priced at £222 found 2 days ago
JetBlue Airways
Fri, 6 Nov - Mon, 9 Nov
BOS
Boston
SFO
San Francisco
£223 Return, found 3 hours ago
£223
Return
found 3 hours ago
Select JetBlue Airways flight, departing Fri, 6 Nov from Boston to San Francisco, returning Mon, 9 Nov, priced at £223 found 3 hours ago
Alaska Airlines
Sat, 12 Sept - Mon, 14 Sept
BOS
Boston
SFO
San Francisco
£224 Return, found 2 days ago
£224
Return
found 2 days ago
Select Alaska Airlines flight, departing Sat, 12 Sept from Boston to San Francisco, returning Mon, 14 Sept, priced at £224 found 2 days ago
Delta
Sat, 26 Sept - Tue, 13 Oct
BOS
Boston
SFO
San Francisco
£245 Return, found 2 days ago
£245
Return
found 2 days ago
Select Delta flight, departing Sat, 26 Sept from Boston to San Francisco, returning Tue, 13 Oct, priced at £245 found 2 days ago
American Airlines
Sat, 3 Oct - Mon, 5 Oct
BOS
Boston
SFO
San Francisco
£258 Return, found 3 days ago
£258
Return
found 3 days ago
Select American Airlines flight, departing Sat, 3 Oct from Boston to San Francisco, returning Mon, 5 Oct, priced at £258 found 3 days ago
United
Sat, 3 Oct - Mon, 5 Oct
BOS
Boston
SFO
San Francisco
£335 Return, found 3 days ago
£335
Return
found 3 days ago
Select United flight, departing Sat, 3 Oct from Boston to San Francisco, returning Mon, 5 Oct, priced at £335 found 3 days ago

Alternative airports near San Francisco

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Francisco Intl. SFO. Cheapest and Closest option available. Average driving time to city centre is 19 minutes. Flights from £275
SFO
San Francisco Intl.
CheapestClosest
Average driving time to city centre19 min
Flights from £275

Frequently asked questions

How much does a flight from Boston, MA (BOS-Logan Intl.) to San Francisco, CA (SFO-San Francisco Intl.) cost?
You can find cheap one-way flights from £110 and cheap return flights from £217 BOS to SFO with Expedia. One-way flights typically cost between £132 and £586, and return flights often range between £433 and £1,105. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when BOS to SFO ticket fares go up or down.
What is the cheapest month to fly from Boston, MA (BOS-Logan Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
The cheapest months to fly from BOS to SFO are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Boston, MA (BOS) to San Francisco, CA (SFO)?
Enter BOS to SFO and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Boston, MA (BOS) to San Francisco, CA (SFO)?
To find a cheap flight from Boston, MA (BOS) to San Francisco, CA (SFO), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Boston, MA (BOS-Logan Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Boston, MA (BOS) to San Francisco, CA (SFO)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from Boston, MA (BOS) to San Francisco, CA (SFO). To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from Boston, MA (BOS-Logan Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
Direct flights from BOS to SFO usually take about 6 hours 50 minutes, traveling roughly 4,342 kilometers. If you opt for a connecting flight, expect to add around 2 hours 30 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Boston, MA (BOS) to San Francisco, CA (SFO)?
Select the "Business class" and "First class" filters when looking for Boston, MA (BOS) to San Francisco, CA (SFO) flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How much is a business class flight from Boston, MA (BOS-Logan Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
A direct, return business class ticket from Boston, MA (BOS-Logan Intl.) to San Francisco, CA (SFO-San Francisco Intl.) typically costs between £2071 - £2817. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Boston, MA (BOS-Logan Intl.) to San Francisco, CA (SFO-San Francisco Intl.) if you opt for a connecting flight.
How do I earn miles on a Boston, MA (BOS) to San Francisco, CA (SFO) flight with Expedia?
It's easy to earn miles on a Boston, MA (BOS) to San Francisco, CA (SFO) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Boston, MA (BOS) to San Francisco, CA (SFO) at the last minute?
Typically, booking a last minute flight from Boston, MA (BOS) to San Francisco, CA (SFO) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Boston, MA (BOS) to San Francisco, CA (SFO) flight and hotel package?
Securing a Boston, MA (BOS) to San Francisco, CA (SFO) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Boston, MA (BOS) to San Francisco, CA (SFO)?
If you booked your Boston, MA (BOS) to San Francisco, CA (SFO) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Logan Intl.
Destination airport
San Francisco Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, United
Return price
£216
Distance
4315 km
Average flight time
3 hours 30 mins

Book with confidence

Compare flights from Boston to San Francisco easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Boston to San Francisco. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to San Francisco Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Logan Intl. to San Francisco Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Logan Intl. (BOS) to San Francisco Intl. (SFO)

The easiest way to view the best deals on flights from Boston to San Francisco today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Logan Intl. to San Francisco Intl. start at just £217 and range up to £335.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Boston and San Francisco
  • booking your flight during January, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Boston to San Francisco flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Logan Intl. to San Francisco Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Boston to San Francisco easily and book with confidence

Explore a world of travel with Expedia

*Available to Expedia members.